Verbatim Mini Wireless Optical Mouse Pack Size: 1 pack Minimum Bulk Purchase: 10 x 1 pack (10 total) Wireless technology allows a 360 degree range of motion and accurate movement within a 1.5m radius 800dpi optical resolution 90 degree swivel USB receiver Power saving automatic sleep function Convenient scroll wheel for easy navigation Plug and Play Windows 95/98/98SE/ME/200/XP/NT Compatible Package includes- Mini Wireless Optical Mouse, slim USB receiver, 2 x AAA Batteries, user manual